Based on Kubuntu Lucid KDM Theme on Ubuntu colors: http://kde-look.org/content/show.php/Kubuntu+Lucid+KDM+Theme+on+Ubuntu+colors?content=123806
Use with Oxygen Cold color scheme (under KDM settings).

The left titlebar button works as the session chooser button while the (x) button works as the system button.

The matching splash is: http://kde-look.org/content/show.php/Arch+Oxygen+Splash?content=124012